Dumping apparatus.



L. T. OLSON.

DUMPING APPARATUS. APPLICATION FILED NOV. 12. 1914.

3 SHEETS-SHEET I.

ITNESSES. INVEN'I'OR. W @7 2L ,4104/1'0 TUzaazv ATTORNEY.

Patented Jan. 29,1918.

L. T. OLSON.

DUMPING APPARATUS. APPLICATION FILEDNOVJIZ, 1914..

Patented Jan.29,1918.

3 SHEETSHEET 2.

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' LbjVEN'I'OR Z0045; damn- WITNESSES:

W a/A L. T. OLSON.

DUMPING APPARATUS.

APPLICATION FILED NOV. 12.1914.

1,255,038. A Y Patented (1,211.39, 1918 ATTORNEY.

' LOUES OLSON, OF DETROIT, MICHIGKN.

orsion.

'nimrme APPARATUS.

'- 1 b all w how t it may concern Be'it known that I, Loons OLSON, acitizen of the United States, residin at Deiroit, county of Wayne, Stateof h ichigan,

' ave inveiited a certain new and useful Improvement in DumpingApparatus, and declare the following to be a full, clear, and exactdescription of the same, such as will enable others skilled in the artto which it pertains to make and use the same, reference bein had to theaccompanying drawings, Whic forma part of this Specification.

This invention relates to dumping apparatus adaptable for use withvehicles of various types, as 'anautomobile or horse drawn vehicle, andhas for its object a'vehiele body adapted to be raised to or loweredfrom dumping position and automatically I the body or box which is alsoadapted to prevent a displacement of the vehicle body during the dumpingoperation that would .otherwise naturally result from a movement .of thematerial inthe box toward the rear end thereof. These and furtherobjects and novelties of the invention are hereinafter more fullydescribed and claimed and shown in the accompanying drawings in which-Figure 1 is a side'elevation of an embodlment of my dumping apparatus asapplied to the chassis of an automobile.

Fig. 3 is a plan view thereof.

Fig. 311s an enlarged side elevation partly in section showing themechanism employed in raising and lowering the front end of the body. 1I

Fig. it is a plan view of such mechanism. Similar characters refer tosimilar parts throughout the drawings and specification.

While in the illustration of the embodiment of the invention it is shownas applied to the-chassis of an automobile, it will be readilyunderstood by those familiar with of the proper shap the art that thedevice is equally applicable for use with vei if various other types, itsimply being no provide a frame support the vehicle Specification ofLetters Patent.

box. 1 indicates a horizontally positioned frame supported in anyconvenient manner upon the running gear of a vehicle and prov ded withan angularly disposed rear portion 2, the angle of which is equal to theangle assumed by the box when raised to its" Patented J am. 29, 1918.Application filed November 12, 1914. Serial No. 871,657.

of. Supported by means of brackets near the forward end of the box 6 isa shaft 7 extending crosswise of the box and provided with like gears 8,8 near opposite ends thereof adapted to engage the rack members 3, 3

and, as more fullyshown in Figs. 3 and 4,.

a roller 9 is rotatably mounted'on a shaft 10, which shaft is held inthe plates 11 and 12 passing upon opposite sides ofthe rack 3 andou'nted upon the shaft 7 at one end, the

opposite endv ofthe bar 12 being. secured at 13 to t e vehicle box. Bythis arrangement the raclis 3, 3 are at all times held in engagementwith the gears 8, 8.

On opposite ends of the shaft 7 are also secured, the comparativelylarge gears 14 which mesh with a gear .15 on a shaft 16 carried, inbrackets'on the box and extending crosswise thereof. Mounted on theshaft j 16 between each gear 15 and the body are sprocket wheels 17, 17.A shaft 171 is mounted in the frame of the machine near the pivot pointof the box and on the shaft on opposite sides of the box are secured thesprockets 172, 172 provided with sprocket chains 173, 173i running overthe sprocket wheels 17 and 17. The shaft 171 is rovided with a crank 171by means of w ich the sprockets and gear train may be operated. As theshaft'l? 1 is not situated at the pivot point of the box, it isnecessarily mounted in slots 180 in the frame 1 on each side and a.spring 181 is provided tending to hold the shaft at thev rear end of theslot. As the box is raised and the relative position of the sprockets 17and 172 altered, the shaft 171 may draw forward in the slots against thespring which keeps the sprocket chains taut at all times.

' In order that the box may be automati'cally locked in position, anotched bar 190 pivoted on each side of the chassis frame. The

upper ends of these bars ride in stirrups 191 the body having endsprojecting across the notched edge of the bars 190. A spring 193 ismounted on the frame tending to hold the notched edge of the bar 190against the rod 192 and is thus in position to engage the said bar andhold the box from descending, A rod 194 is also mounted on the chassisframe having pawls 195 engaging against the edge of the b'a'r on theopposite side from the spring 103. The shaft 194 is provided with acrank 196 by means of which it may be turned and the notches of the bardisengaged from the rod 192 when it is desired to lower the body withthe crank 17% on the sprocket shaft 17 As before stated the box ispivotally supported on the frame 1 by means of a shaft 4 extendingthrough companion bearings on the box and frame respectively whichprevents endwise movement of the box when in its elevated position and,by the angular extensions 2 on the frame 1, the rear end of the boxbeyond the pivot bearings issupported when the box is raised to itsfullest extent; By such arrangement, the weight of, the material rollingout of the back end of the box cannot raise the forward end thereof aswith some other-devices of like nature. In order that the box may not besuddenly brought to rest on the extension2 by reason of the weight ofmaterial'passing out of the end of the box, I have provided springrestrained plunger-s 22 upon opposite sides of the frame nearthe extremeend of the extensions which'are first engaged by the end of the box andtend to lessen'the jar produced by sudden engagement of the box with theextension 2 and these plungers tend to raise the rear end of the boxafter the greater portion of the material has passed therefrom.

As shown more fully in Figs. ,5 and 3,'thc

gear train utilized in raising and lowering the box is in du )hcate u ono )osite sides .thereof as are also the operating sprockets on the f'ame. so that the box maybe raised or lowered from either side of thevehicle as may be most convenient.

In operation rotation of either crank 17% and corres mnding rotation ofthe sprockets and gear trains raises the front, end' of the box to suchheight as is necessary for the box to empty by gravity, which heightisdiseernible by the operator by reason of his position near the rea rend of the. box, Which height is necessarily greater with someInatcrials than with others and, when the box has been raised to thedesired height, the

notched bars 190 automatically engage the rod 19:2 holding the box atthe desired angle but in no event can the, gear 8 be drawn upwardpastthe end of the racks 3, 3 asthe rear end of the boxengages against theangular extensions on the frame before thegear has reached the upper endof the rack and by this arrangement breakage of the, parts from suchcause is avoided.

* Haying thus briefly described my invention and its mode of ope ationwhat I claim and desire to secure by Letters Patent of the United Statesis 1. In apparatus of the character described, in combination with aframe having an angularly disposed depending rear portion, of a boxhinged between the ends thereof to the frame adjacent the angularlydisposed portion, companion gear trains attached to the box and racksoifthc frame for elevating the forward end of the box, sprockets carriedon the frame liavingchains foroperating the gear trains. and lockingmeans for mainpiining the box in an elevated position 2. n apparatus ofthe character described}: in combination with a frame having an a ngularly disposed depending rear portion, of a box hinged between theends thereof to the frame adjacent the angularly disposed portion, andmeans for raising or lowering the l forward end of the box comprising,curved rack bars pivotally supported by the frame and extending upwardlyeach side of the box, a shaft secured to the box, gears thereon meshingwlth the rack bars, a roller engaging each rack bar upon the side oppo-,-site thesaid gear, a frame for each roller adapted to hold the rollerin its proper po. sition relative to its companion gear, a gear train oneach side of the box for rotating said gear shaft, sprocket wheelscarried-by the frame having chains for operating the in combination, aframe having an angu-- larly disposed depending rear portion, a box"adapted to discharge a load by gravity at the rear end hinged betweenthe ends thereof to the frame adjacent the angularl'ydisposed POI'tIOH,spring bumpers carried by said angularlydisposed portion engaged by therear end of the box when elevated; means for raising or lowering theforward end of the box comprising, curved rack bars piv'otally supportedby the frame and extending upwardly each. side of the box, a shaftsecured to the box,-gears thereon meshing with the rack bars, means formaintaining the rack bars in engagement with said gears, a gear on eachend of Said shaft adjacent the first named parts, a second shaft carriedby the box, a gear adjacent each end thereof meshing with said last 7box adapted to discharge a sa1d angularl'y disposed named gears, asprocket wheel on said second shaft adjacent each side of the box nearrear sprocket wheels with the forward ones,

a crank for jointly operating the rear set of sprocket wheels, va pairof notched bars on each sideeof the box pivoted to the f time; means onthe box adapted to engage said notches when the box is raised, a springfor holding each bar in contact with the engaging n1eal1s,, ,and meansfor releasing said bars. 4. In appa atus of the character described, incombination, a frame having an angularly disposed depending rear load bygravity at the rear end hinged between the ends thereof to the frameadjacent the angularly disposed portion, spring the rear end of the boxwhen elevated; means for raising or lowering the' forward portion, a-

bumpers carried by portion engaged by end of the box comprising, curvedrack bars pivotallv siipported by the frame and,

extending upwardly each side of the .box, a

shaft secured to the box, gears thereon ine'shing with the rack bars,means "for maintaining the rack bars in engagement with said gears, agear on each' end of said shaft adcarried by the'box, a gear adjacenteach end thereof meshing with said last named ears,

a' sprocket wheel on said second shaft ad- Jacent each side of the boxnear the forward end, a second set of sprocketwheels movably mounted onthe frame near the rear end, sprocket chains connecting the rearsprocketwheels with the forward ones and a crank for jointly operating the rearset of sprocket wheels. I

In testimony whereof, I sign this specification in the presence of twowitnesses.

' v LOUES 'l. OLSON. Witnesses:

Cnxnnns E. Wisxen, Ennxs B. lVlsxnn.

acent the first named parts, a second shaft

